Insulated bracket



Sept. 9, 1941. R. R. PITTMAN ETAL INSULATED BRACKET Filed Sept. 20, 1940 Patented Sept. 9, 1941 uuirsp .SI'LIATES PATENT FFICE msum'rap nnacxs'r Ralph n. Pittman and canon 11. Walsh.

Application September so, 1040, Serial No. casts a cum. (01. 174-161) The present invention relates to insulated brackets tor use in supporting electrically energised conductors on rules or other structures.

It is desirable in brackets of this character to tie the conductor to the insulator in such a position that the conductor will be supported by a portion oi the bracket in the event of loosening or failure or the tie wire used in fastening the conductor to the insulator, in order to prevent the conductors dropping to a position in which they may be a hazard to life or property. At the same time it is desirable to support the insulator-retaining member at its respective ends, to thereby provide the greatest strength in the direction oi the conductor with a minimum of material, and therefore lowest cost. I

Among the objects of the present invention maybenoted (l) theprovisionoiabrachetso' arranged and constructed that a conductor may bepositioned at thebasesideoi'theinsulator without threading the end of the conductor through the bracket, this being accomplished through an organisation in which the insulatorretaining member may be gagement with a portion'oi' the base,and subsequently tilted or swung away from the base to permit the desired positioning 0! the conductor, following which the insulator-retaining member may be restored to the latched position with respect tothe base; (2) the-oi a conducting resilient element for assuring electrical contact between the base and the insulator-retaining member, the resilient element actingtomaintainthelattermemberinthelatched position with respect to said base and (3) the provision of an economically constructed insulated bracket having relatively great strength unlatched from en-' than the former. The insulator-retaining member ll extends upwardly from a point below the portion i2 through an opening therein, through the insulator II to a point above .the portion II, and thence laterally and downwardly through an opening in. the latter.

For normally retaining the member II in the position lust stated, a helical spring It is interposed between the lower surface of the base portlon II and the washer ii, the latter being retainedin position at the lower end of the insulator-retaining member I! by means of the pin il.

The spring it normally urges the insulatorretaining member ll downwardly, and thereby normally maintains the upper end of the latter in latched engagement with the upper portion II. The insulator ii is preferably loosely fitted over'the member ll, and is limited in its upward movement through engagement with the outer end of the member ll, thereby preventing the upstrain of aitensioned conductor unlatching the conductor-retainingmember it.

The latter member may be readily moved to the unlatched position shown by the broken lines 0! Fig.1, by compressing the spring II, the in-- winter I l' and the'conductor-retainlng member I: then'moved. to-the position shown by Fig. 2, and a conductor inserted laterally in the space 8 between the insulator i1 and the vertically extending portion of the base It. The elements may then be to the position shown by l'ig. 1. p

Fig. 3 illustrates a plurality of brackets 01' the present invention mounted on the common base,

the latter being attached to the pole II by means of the bolts 20 and 21.. The preferred manner of positioning the conductors II is here shown, the latter being respectlvelytied to the insulators l1 aobythetiewiresfl.

base ll includes amounting surface and upper and lower outwardly extending portions II and I2 respectively, the latter preferably being longer Other embodiments of the invention are possible, and it is therei'ore intended that the description and iilustratimis herein be interpreted of said base while said other and remains fastened to said second portion or said base, the arrangement being such that said insulatorretaining member may be swung laterally away from said first portion when unlatched.

2. An insulated bracket comprising a base having upper and lower outwardly extending portions, an opening extending downwardly through each portion at the respective outer endsthereof. an insulator-retaining member extending upwardly through the opening in the lower portionopening in said upper portion, said insulator cooperating with said member following the removal to fasten both said insulator and said member to said lower portion.

3; An insulated bracket comprising a base having upper and lower outwardly extending portions, an opening extending downwardly through each portion at the respective outer ends thereof, an insulator-retaining member extending upwardly through the opening in the lower portion to a point above the upper portion and thence inwardly and downwardly through the opening in said upper portion, an insulator positioned between said upper and lower portions through which said insulator-retaining member extends, and means for removably latching" the downwardly extending portion oi said insulator-retaining member to the upper portion of said base.

RALPH R. PIT'IMAN. CARROLL H. WALSH. 

